It's slowly being rolled out. It's not all your cash that goes on the card. You can nominate an amount to go direct to bills (like rent, elec, gas, etc) - with what is left over, a percentage of it is paid to your account as cash to do with what you want. The remainder is out on a card and restrictions apply as to what you can purchase (no booze, smokes etc). And it can only be spent at set retailers.
The percentage of your money that goes on the card is dependent on your circumstances. Generally it's half the money - so once gas, elec, rent etc are paid, half of what is left goes on your card for essentials, half as cash. But there are some circumstances where it is a larger percentage (people under monitoring by child protection for instance)

At the moment it has primarily been rolled out in indigenous/remote communities up noth and over west. It isn't restricted to indigenous people though - if you reside in an area under income management it will likely apply to you. It is something that is being trialled - some areas have gone through compulsory income management and now have voluntary/opt in options. As much as there seems to be massive negativity I social media, a lot of people who have the option to opt out don't. It seems to work quite well for a lot of people

I don't know if the current government plans to continue expanding the area that is covered by the basics card/income management. It has been floating around that it would go Australia wide at some point but I honestly don't know what the current stance on it is